Reinforced-concrete post or pole.



G. A. ZILLGITT.

REINFORCED CONCRETE POST 0R POLE.

APPLIGA TION FILED MAY 10, 1912.

Patented Feb. 11, 1913.

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' INVJIZNTOR I (/52) Allorney G. A. ZILLGITT. I NFOROED CONCRETE POST OR POLE.

APPLICATION FILED MAY 10,1912.

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GUSTAV A. ZILLGITT, OF MILWAUKEE, WISSONSIN.

REINFORCED-CONCRETE PEST E POLE.

Specification of Letters Patent.

Feb. 3111,1313

Application filed May 10, 1912. Eerie No. 6955,4116.

Reinforced-Concrete Posts or Poles, of which the following is a specification.

lhis invention relates to certain new and useful improvements in reinforced concrete posts or poles; the object being to provide a post or pole with a skeleton upper portion and a base portion having threads for forcing its way into the ground; said base having a core embedded therein carrying rein- I forcing rods extending into the skeleton ,upper port-ion and the main object of the in vention is to provide novel'means for connecting these reinforcing rods to the core.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claim.

In the drawings-Figure 1, is a side elevation of a post or pole,'constructed in ac 'cordance with my invention; Fig. 2, is a perspectlve view of the reinforced core and wires upon which the plastic post is molded in order to form a skeleton post or pole as shown in Fig. 1; Fig. 3, is a horizontal section taken on theline 3-3 of Fig.1; Fig. 4', is a horizontal section taken on the line H i of Fig. 1; Fig. 5, is a longitudinal section taken on the line 5 of Fig. 1; Fig. 6, is a side elevation of a post or pole showing a slightly modified form; Fig. 7, is a longi tudinal section through the base portion of the modification shown in Fig. 6; Fig. 8, is a section taken on the line 88 of Fig. 7; and Fig. 9, is a longitudinal section partly in elevation of still another modified form.

In carrying out my improved invention, I employ a cylindrical core portion 1 which is provided with a longitudinal bore 2 at. its upper portion, and the outer. face thereotis previded with lon itudmal grooves 3 in which'are embedde vertical rods 4: secured inposition by bands 5 encircling the base or core 1, an seated in the annular grooves 6 as clearly show said bands 5 being coiled about the vertical rods 1} as shown at 7 in order to revent the same from moving lonitudinal y thereon. The core herein shown its-substantially conical in shape in order to. produce base substantially conical {so that v the same can be readily forced] into the ground by rotating the post. The vertical rods .h converge toward a common center at their upper ends and are connected together at intervals by horizontal reinforcing wires 8 wh'ch are coiled about the rods shown at i seen that l have provided a reinforcing member which comprises a base portion haw ing vertical reinforcing wires carried thereby, connected together at intervals, which formmg a complete post or pole as will be later described.

A reinforcing member constructed as above described in forming complete post, is placed within a suitably formed moldand concrete or cement is placed within the same, the same entering the bore of the base and completely covering the reinforcing wires so as to form a skeleton upper portion 10, which comprises parallel members 11 connected together at intervals by horizon, tal portions 12, said members terminating in a circular portion 13 forming the cap or top of the post, which provides means for corn necting the hitching strap, when a post constructed in this manner is used as a hitching post. The cylindrical base or coreis also covered with cement, which forms a conical base 14 for the post or pole, provided with a spiral rib 15 forming a thread bym'eans of which the post can be forced into the ground without digging a hole theretor; thereby enabling the post to be set up quickly and moved from place to place, as desired.

In the modification shown in Figs. 6, 7

of the same diameter throughout its length material is arranged, in substantially the out itslength which can be readily forced the pole firmly in the modification shown in Fig. 9, the coral? is co lcal or hasn'smaller'lovver end which i have found will have advantages can be readily placed in a suitable mold for and 8, the base 1% thereof is cylindrical andand comprises a cylindrical. core 16 havingopen ends. over which the coating of plastic same manner as that shown in the preferred form. in the modification shown in Figs.

base is screwed into positiomthereby providing a base of the same diameter througl From the above description it will be I intothe "round and one which will so wort over. a post constructed as described in Figs; 6, 7 and 8, when working in exceptionally hard ground and in this figure, the base of the post is also hollow throughout its length in order to allow the ground to work up through the same when being forced into position. v

From the foregoing description it will be seen that I have provided a reinforced concrete post or pole having a threaded base portion and a skeleton upper portion which is exceedingly strong and durable, the ver-' 'tical members thereof being connected at intervals to prevent spreading. By this construction, 'a great saving of cement is obtained, and at the same time a post is formed which will have all of the advantages of cement posts now in use, the same being capable of being used for various purposes. 20

I claim A reinforced concrete post or pole having o dinal grooves, wires or bands encircling said base' within the annular-grooves for securlng said rods 1n the longitudinal grooves,

said rods converging toward eachother and connected together at intervals by horizontal tie rods, each tie rod being looped around the vertical rods, said core and rods having a coating thereon of concrete to form a concrete post having a skeleton upper portion. In testimony whereof I aflixmy slgnat ure in presence of two Witnesses.

GUSTAV A. ZILLGITT.

Witnesses:

TALTER A. Gross, BENJ. FREY. 

